New insights into the genesis of Neoproterozoic low-δ18O granitoids in the Seychelles: crustal cannibalization within an intra-plate extensional setting

• 作者: Jiu-Long Zhou Robert D.Tucker Xian-Hua Li
• 来源期刊: 科学通报（英文版）
• 年，卷（期）: 2020,（22）
• 所属期刊栏目: SHORT COMMUNICATIONS
• 页码范围: 1880-1883
• 页数: 4页
• 语种: 英文

摘要

Linking global rock records geologically and paleomagnetically in deep time has revealed that plate motion of Earth's lithosphere is characterized by periodic supercontinent cycles.Two mutually competing geodynamic models have been proposed to explain the break-up of the Neoproterozoic supercontinent Rodinia, which invoke either underlying mantle plumes (i.e., a superplume) [1] or surrounding accretionary orogenic systems [2].A precise understanding of the tectonic setting of Neoproterozoic magmatism around the periphery of Rodinia is crucial for distinguishing between these two contrasting hypotheses.